Goldenberg, R.L., J.F. Culhane, J.D. Iams and R. Romero, 2008. Epidemiology and causes of preterm birth. The Lancet, 371: 75-84.
Walani, S.R., 2020. Global burden of preterm birth. Int. J. Gynecol. amp Obstet., 150: 31-33.
Cobo, T., M. Kacerovsky and B. Jacobsson, 2020. Risk factors for spontaneous preterm delivery. Int. J. Gynecol. amp Obstet., 150: 17-23.
Ilicic, M., T. Zakar and J.W. Paul, 2019. Epigenetic regulation of progesterone receptors and the onset of labour. Reprod., Fertil. Dev., 31: 1035-1045.
Renzo, G.C.D., V. Tosto and I. Giardina, 2018. The biological basis and prevention of preterm birth. Best Pract. amp Res. Clin. Obstet. amp Gyna., 52: 13-22.
Maternal-Fetal Medicine Publications Committee S. 2020. 1. SMFM Statement: Use of 17-alpha hydroxyl-progesterone caproate for prevention of recurrent preterm birth. Am J Obstet Gynecol., 223: 16-18.
Romero, R., K.H. Nicolaides, A. Conde‐Agudelo, J.M. O'Brien and E. Cetingoz et al., 2016. Vaginal progesterone decreases preterm birth ≤ 34 weeks of gestation in women with a singleton pregnancy and a short cervix: An updated meta‐analysis including data from the Opptimum study. Ultrasound Obstet. amp Gynecol., 48: 308-317.
Committee on Practice Bulletins—Obstetrics. 2012. 1. The American College of Obstetricians and Gynecologists. Practice bulletin no.130: prediction and prevention of preterm birth. Obstet Gynecol., 120: 964-973.
Society for Maternal-Fetal Medicine Publications Committee, with assistance of Vincenzo Berghella. 2012. 1. Progesterone and preterm birth prevention: translating clinical trials data into clinical practice. Am J Obstet Gynecol., 206: 376-386.
American College of Obstetricians and Gynecologists’ Committee on Practice Bulletins—Obstetrics. 2021. 1. Prediction and prevention of spontaneous preterm birth: ACOG practice bulletin, number 234. Obstet Gynecol, 138: 65-90.
Newnham, J.P., J.E. Dickinson, R.J. Hart, C.E. Pennell, C.A. Arrese and J.A. Keelan, 2014. Strategies to prevent preterm birth. Front. Immunol., Vol. 5. 10.3389/fimmu.2014.00584.
Yadav, G., S. Gupta, P. Singh, M. Kansara, P. Kathuria, M. Gothwal and C. Sharma, 2022. The role of vaginal progesterone in established pre-term labor: A randomized controlled trial. J. Family Med. Primary Care, 11: 7042-7047.
Mishra, A.A. and S.N. Chaudhari, 2020. Vaginal progesterone after tocolytic therapy in threatened preterm labour. Medip Academy, Int. J. Reprod. Contra Obstet. Gynecol., 9: 3233-3236.
Bajaj, P., S. Jain, S. Pundir and R. Khatuja, 2018. The role of micronized progesterone in preterm labour. Indian J Obstet Gynecol Res., 5: 253-258.
Ferrari, F., S. Minozzi, L. Basile, G. Chiossi and F. Facchinetti, 2023. Progestogens for maintenance tocolysis in symptomatic women. a systematic review and meta-analysis. Plos one., Vol. 18, 2. 10.1371/journal.pone.0277563.
Mishra, G.S. and S.A. Inamdar, 2014. 1. Role of micronized progesterone in maintenance therapy following arrested preterm labor: a randomized controlled trial. Int J Reprod Cont Obstet Gynecol., 3: 1050-1055.
Kristen, R. and P. Bethany, 2017. Preterm Labor: Prevention and Management..
Cetingoz, E., C. Cam, M. Sakallı, A. Karateke, C. Celik and A. Sancak, 2011. Retracted article: Progesterone effects on preterm birth in high-risk pregnancies: A randomized placebo-controlled trial. Arch. Gynecol. Obstet., 283: 423-429.
Norman, J.E., 2020. Progesterone and preterm birth. Int. J. Gynecol. amp Obstet., 150: 24-30.
Bomba, O.D.A., K.K. Kosinska, P. Kosinski, P. Wegrzyn, B. Kaczynski and M. Wielgos, 2014. Vaginal progesterone after tocolytic therapy in threatened preterm labor. J. Mate Fetal amp Neon Med., 25: 1156-1159.
Eke, A.C., T. Chalaan, G. Shukr, G.U. Eleje and C.I. Okafor, 2016. A systematic review and meta‐analysis of progestogen use for maintenance tocolysis after preterm labor in women with intact membranes. Int. J. Gynecol. amp Obstet., 132: 11-16.
Martinez, D.T.B., A. Karolinski, M. Ocampo, C. Laterra and I. Hösli,et al., 2015. 1. Prevention of preterm delivery with vaginal progesterone in women with preterm labour (4P): Randomised double‑blind placebo‑controlled trial. BJOG, 122: 80-89.
Vladic, S.Y., T. Vladic and G. Marchini, 2022. Progesterone Gel and Placebo Prolonged Pregnancy More Effectively Than Intravenous Tocolysis Alone in Women with Preterm Labor. Gels, Vol. 8..
Renzo, G.C.D., V. Tosto, V. Tsibizova and E. Fonseca, 2021. Prevention of preterm birth with progesterone. J. Clin. Med., Vol. 10, 19. 10.3390/jcm10194511.
Borna, S. and N. Sahabi, 2008. Progesterone for maintenance tocolytic therapy after threatened preterm labour: A randomised controlled trial. Aust. Zealand J. Obstet. Gyna., 48: 58-63.
Vaja P. and M. Goyal, 2014. 1. A comparative study of two tocolytic agents for inhibition of preterm labour. Gujarat Medical J., 69: 28-31.